/* ═══════════════════════════════════════════════════
   LOKESH BEHERA — PORTFOLIO
   Aesthetic: Industrial Terminal / Cloud-Native Dark
═══════════════════════════════════════════════════ */

/* ── TOKENS ── */
:root {
  --bg: #0a0c0f;
  --bg-2: #111418;
  --bg-3: #181c22;
  --border: rgba(255,255,255,0.07);
  --text: #e8ecf0;
  --text-muted: #6b7585;
  --text-sub: #9aa3b0;
  --accent: #00d4ff;
  --accent-2: #0088cc;
  --accent-glow: rgba(0, 212, 255, 0.15);
  --accent-glow-strong: rgba(0, 212, 255, 0.3);
  --card-bg: #12161c;
  --card-border: rgba(0, 212, 255, 0.1);
  --nav-bg: rgba(10, 12, 15, 0.85);
  --font-body: 'Outfit', sans-serif;
  --font-mono: 'Space Mono', monospace;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-w: 1200px;
}

[data-theme="light"] {
  --bg: #f5f6f8;
  --bg-2: #ffffff;
  --bg-3: #edf0f4;
  --border: rgba(0,0,0,0.08);
  --text: #0d1117;
  --text-muted: #6b7585;
  --text-sub: #4a5568;
  --accent: #0066aa;
  --accent-2: #004d88;
  --accent-glow: rgba(0, 102, 170, 0.1);
  --accent-glow-strong: rgba(0, 102, 170, 0.2);
  --card-bg: #ffffff;
  --card-border: rgba(0, 102, 170, 0.12);
  --nav-bg: rgba(245, 246, 248, 0.9);
}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent-2); border-radius: 4px; }

/* ── CONTAINER ── */
.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

/* ── TYPOGRAPHY ── */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 20px;
}
.section-heading {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 48px;
}
.accent { color: var(--accent); }
.outline-text {
  -webkit-text-stroke: 2px var(--accent);
  color: transparent;
}
[data-theme="light"] .outline-text {
  -webkit-text-stroke: 2px var(--accent);
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #0a0c0f;
}
.btn-primary:hover {
  background: #33ddff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--accent-glow-strong);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}
.btn-sm { padding: 8px 18px; font-size: 0.82rem; }
.btn-full { width: 100%; justify-content: center; }

/* ══════════════════════════
   NAV
══════════════════════════ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), box-shadow var(--transition);
}
.nav.scrolled { box-shadow: 0 4px 32px rgba(0,0,0,0.3); }
.nav-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
}
.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  flex-shrink: 0;
}
.nav-links {
  display: flex;
  gap: 32px;
  margin-left: 16px;
}
.nav-links a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-sub);
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width var(--transition);
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }
.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
}
.theme-toggle {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 38px; height: 38px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: all var(--transition);
  color: var(--text);
}
.theme-toggle:hover { border-color: var(--accent); transform: rotate(20deg); }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: none; }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}
.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 16px 24px 20px;
  border-top: 1px solid var(--border);
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
}
.mobile-menu a {
  padding: 10px 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-sub);
  border-bottom: 1px solid var(--border);
}
.mobile-menu a:last-child { border: none; }
.mobile-menu.open { display: flex; }

/* ══════════════════════════
   HERO
══════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 100px 24px 80px;
}
.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 0%, black 0%, transparent 80%);
}
.hero-orbs { position: absolute; inset: 0; pointer-events: none; }
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: drift 12s ease-in-out infinite alternate;
}
.orb-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,212,255,0.12) 0%, transparent 70%);
  top: -200px; right: -100px;
}
.orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(0,136,204,0.1) 0%, transparent 70%);
  bottom: 0; left: 0;
  animation-delay: -6s;
}
.orb-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(0,212,255,0.08) 0%, transparent 70%);
  top: 50%; left: 40%;
  animation-delay: -3s;
}
@keyframes drift {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(40px, 30px) scale(1.05); }
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-glow);
  border: 1px solid rgba(0,212,255,0.2);
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--accent);
  margin-bottom: 32px;
  letter-spacing: 0.05em;
}
.badge-dot {
  width: 7px; height: 7px;
  background: #00ff88;
  border-radius: 50%;
  box-shadow: 0 0 8px #00ff88;
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.8); }
}
.hero-name {
  font-size: clamp(3.5rem, 10vw, 8rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}
.hero-role {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  color: var(--accent);
  margin-bottom: 20px;
  min-height: 2em;
}
.cursor {
  animation: blink 1s step-end infinite;
  color: var(--accent);
  font-weight: 300;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}
.hero-tagline {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  color: var(--text-sub);
  max-width: 560px;
  margin-bottom: 40px;
  line-height: 1.7;
}
.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  font-family: var(--font-mono);
  line-height: 1;
}
.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-top: 4px;
  display: block;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}
.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-family: var(--font-mono);
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollDrop 2s ease-in-out infinite;
}
@keyframes scrollDrop {
  0%, 100% { transform: scaleY(1); opacity: 1; }
  50% { transform: scaleY(0.5); opacity: 0.4; }
}

/* ══════════════════════════
   SECTION SHARED
══════════════════════════ */
.section { padding: 100px 0; }
.section:nth-child(even) { background: var(--bg-2); }

/* ══════════════════════════
   ABOUT
══════════════════════════ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.about-text p {
  color: var(--text-sub);
  margin-bottom: 16px;
  font-size: 1rem;
  line-height: 1.75;
}
.about-text p strong { color: var(--text); }
.about-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}
.link-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.8rem;
  color: var(--text-sub);
  transition: all var(--transition);
}
.link-pill:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}
.about-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.info-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all var(--transition);
}
.info-card:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 24px var(--accent-glow);
  transform: translateY(-4px);
}
.card-icon {
  font-size: 1.6rem;
  margin-bottom: 12px;
}
.info-card h3 {
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.info-card p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ══════════════════════════
   SKILLS
══════════════════════════ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 16px;
}
.skill-item {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  text-align: center;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-sub);
  transition: all var(--transition);
  cursor: default;
}
.skill-item:hover {
  border-color: var(--accent);
  color: var(--text);
  transform: translateY(-6px);
  box-shadow: 0 8px 32px var(--accent-glow);
  background: var(--bg-3);
}
.skill-icon {
  width: 48px; height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  filter: drop-shadow(0 0 8px rgba(0, 212, 255, 0));
  transition: filter var(--transition);
}
.skill-item:hover .skill-icon {
  filter: drop-shadow(0 0 12px rgba(0, 212, 255, 0.4));
}
.skill-icon svg { width: 100%; height: 100%; }

/* ══════════════════════════
   PROJECTS
══════════════════════════ */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 40px;
}
.project-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 36px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-6px);
  box-shadow: 0 16px 48px var(--accent-glow);
}
.project-card:hover::before { opacity: 1; }
.project-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.project-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 14px;
  line-height: 1.3;
}
.project-desc {
  font-size: 0.9rem;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 20px;
}
.project-highlights {
  list-style: none;
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.project-highlights li {
  font-size: 0.82rem;
  color: var(--text-muted);
  padding-left: 0;
}
.project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.project-stack span {
  font-size: 0.73rem;
  padding: 4px 10px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-sub);
  font-family: var(--font-mono);
}
.achievements {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 8px;
}
.achievement {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 20px;
}
.ach-icon { font-size: 1.4rem; flex-shrink: 0; }
.achievement strong { display: block; font-size: 0.9rem; margin-bottom: 4px; }
.achievement p { font-size: 0.8rem; color: var(--text-muted); line-height: 1.6; }

/* ══════════════════════════
   CONTACT
══════════════════════════ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}
.contact-blurb {
  color: var(--text-sub);
  font-size: 1.05rem;
  line-height: 1.75;
  margin-bottom: 36px;
}
.contact-methods { display: flex; flex-direction: column; gap: 12px; }
.contact-method {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.contact-method:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
}
.cm-icon {
  width: 38px; height: 38px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}
.contact-method strong { display: block; font-size: 0.8rem; color: var(--text-muted); }
.contact-method span { font-size: 0.9rem; }

/* Contact Form */
.contact-form-wrapper {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 36px;
}
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-sub);
  letter-spacing: 0.03em;
}
.form-group input,
.form-group textarea {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  resize: vertical;
  outline: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-group input.error,
.form-group textarea.error { border-color: #ff4d4d; }
.form-error {
  font-size: 0.75rem;
  color: #ff6b6b;
  min-height: 16px;
}
.form-success {
  text-align: center;
  color: #00ff88;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 12px;
  background: rgba(0,255,136,0.08);
  border: 1px solid rgba(0,255,136,0.2);
  border-radius: var(--radius-sm);
}

/* ══════════════════════════
   FOOTER
══════════════════════════ */
.footer {
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  padding: 28px 24px;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-copy { font-size: 0.8rem; color: var(--text-muted); }
.back-top {
  width: 38px; height: 38px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--transition);
  color: var(--text-muted);
}
.back-top:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-3px);
}

/* ══════════════════════════
   ANIMATIONS
══════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal:nth-child(4) { transition-delay: 0.3s; }
.reveal:nth-child(5) { transition-delay: 0.4s; }

/* ══════════════════════════
   RESPONSIVE
══════════════════════════ */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-cards { order: -1; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .projects-grid { grid-template-columns: 1fr; }
  .achievements { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-right .btn { display: none; }
  .hamburger { display: flex; margin-left: auto; }
  .about-cards { grid-template-columns: 1fr 1fr; }
  .skills-grid { grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); }
  .hero-stats { gap: 20px; }
  .stat-divider { display: none; }
}
@media (max-width: 480px) {
  .hero { padding: 90px 20px 70px; }
  .about-cards { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; justify-content: center; }
  .contact-form-wrapper { padding: 24px; }
  .project-card { padding: 24px; }
  .footer-inner { flex-direction: column; text-align: center; }
}

/* ── LIGHT MODE TWEAKS ── */
[data-theme="light"] .orb-1 {
  background: radial-gradient(circle, rgba(0,102,170,0.06) 0%, transparent 70%);
}
[data-theme="light"] .orb-2 {
  background: radial-gradient(circle, rgba(0,68,136,0.05) 0%, transparent 70%);
}
[data-theme="light"] .hero-bg-grid {
  background-image:
    linear-gradient(rgba(0,0,0,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.04) 1px, transparent 1px);
}
[data-theme="light"] .btn-primary { color: #fff; }
[data-theme="light"] .form-group input,
[data-theme="light"] .form-group textarea {
  background: var(--bg);
}